Wheel



Y Patented Aug. I6, |898. J. MACPHAIL. A

W H E E L @Application led Aug. 10, 1896.)

2 Sheets--Sheet I.

(No Model.)

MM@ Mvff on the line 3 3 of Fig. 2.

. irs T Arns JAMES MAOPIIAIL, OF IVES'I PULLMAN, ILLINOIS, ASSIGNOR TO TIIE PLANO MANUFACTURING COMPANY, OF OI-IIOAGO, ILLINOIS.

WHEEL.

SPECIFICATION forming part of Letters Patent No. 609,203,` dated August 16, 1898.

Application led August 10,1896. .Serial No. 602,238. (No model.)-

Pullman, in the county of Cook andState of Illinois, have invented a certain new and usef ful Improvement in W'heels, which is fully set forth in the following specification, reference being had to the accompanying drawings, in which- Figure l is a side elevation of a Wheel constructed according to my invention, with a portion thereof shown in vertical section. Fig. 2 is a vertical cross-section on the line 2 2 of Fig. l, on an enlarged scale, with parts broken away. Fig. 3 is a vertical longitudinal section of the hub and parts thereto attached,

Fig. i is an elevation of a spoke. Fig. 5 is a plan View of the outersurface of a portion of the hub. Fig. 6 is a detail View of one of the clamping-plugs. Fig. 7 is a plan View of a portion of the hub and a spoke and of a clamping-plug arranged in place.

My invention relates to wheels, particularly to such as are used in hay-rakes and other like agricultural implements. It has for its object to provide a Wheel of this type more economical in construction and more cheaply and easily repaired than the'wheels previously used.

It has for a further object to render such a wheel less subject to breakage or indentation by a spoke construction which makes the connection between the rim and the hub a more or less elastic one, as will be hereinaf ter described.

Referring to the drawings by letter, A represents the hub proper, which is adapted to be mounted upon the axle of the machine.`

The said hub A near its inner end is provided with an upright iiange B, preferably formed integral with the said hub. Upon the outer edge of the iange Bis formed a second and inwardly-extending flange O, at right angles to the said flange B, and thus concentric with the hub proper, A. This flange C may be further extended inward and be provided with teeth C2 on its inner surface, thus forming an internal gear Where such is necessary for the operation of the machine in question.

Entering into the flange O from the outer surface thereof are formed a series of semicylindrical recesses D. The side walls of each, d, are vertical. The bottoms of each, d', are "curved, as shown. In order to imake these recesses of sufficient depth without unduly increasing the thickness of the ange C, the said iiange may be formed to curve inward toward the hub, as at D. Atthe bot-` tom of each recess D a bolt-hole d2 extends through the flange O. In practice I find it desirable also to form on each side of the recess D a lug or projection E, which are so disposed that by the recess D the said lugs are also partly cut away, as particularly shown in Figs. 3 and 5. All of the parts hereinabove described may be made integral in a single casting.

The spoke employed is in general of the type known 'as hair-pin spokesthat is, the double spoke F comprises the two spokes F and F2, united at their hub ends by the bend or loop F3. .The said bend F3 is perforated to permit of its being bolted tc the hub, as hereinafter described. Upon each outer end of the double spoke is formed a segmental extension f, concentric with the rim of the wheel and united with the body of the spoke by the bend f. These spokes are preferably made of flat bar-iron, which is easily struck up into the requisite form.

The tire Gis preferably formed with a channel G upon its inner surface of such` shape and width as to be adapted to receive the segmental eXtensions f of the spokes, which may be secured to the said tire by the bolts or rivets g.

The clamping-plugs H are each made in the form of a segment of a cylinder. They may be further provided with the lugs 7L in case the corresponding lugs E upon the hub-fiange are used. The clamping-plug is perforated to permit of the insertion of the bolt I, later described.

When the wheel is to be set up, each spokeloop F3 is inserted in one of the recesses D, in which it is adapted to fit snugly. The

clampingplug I-I is next put in place Within the loop of the said spoke, each clamping-plu g being drawn tightly into place by the bolt I. The spoke is thus securely fastened to the ICO hub. The function of the lugs E upon the hub-flange C and of the corresponding lugs h upon the clamping-plugs is to provide the p loop of the spoke with a longer bearing than it would otherwise have Without unduly increasing the thickness of the iiange C.

The segmental extensions upon the rim ends of the spokes are then secured in place in the channeled surface of the wheel-rim by the rivets g. The bends f thus provide an elastic connection between the Wheel-rim and the hub. The rim yields to a certain extent When striking some obstruction instead of becoming indented or of breaking. It Will further be seen by the entirely separate connection of each double spoke with the hub and With the rim that upon the breakage of one of such spokes the same can be easily removed and another substituted Without taking apart the entire Wheel, which has hitherto been necessary in wheels formed with hair pin spokes.

Having thus described my invention, I do not Wish to limit the same to the details of construction herein shoWn and described; but

What I claim, and desire t0 secure by Iletters Patent, is-

l. In a Wheel, the hub A; the flange C concentric With the hub and provided With the segmental recesses D the fiat double spokes F, comprising the two spokes F and F2 united at their hub ends by the loop F3; the said loops F3 being adapted to iit in the said recesses D; segmental clamping-plugs II adapted to iit Within the loops F3; bolts I` passing through the said plugs I-I, loops F3 and iange C; the rim G; and means for attaching the rim ends of the spokes thereto.

2. In a Wheel, the integral spokes F, comprising the two spokes I1" and F2 united at their hub ends by the segmental loop F3 and terminating with the segmental extensions f connected to the said spokes by the bends or loops f With the hub A comprising the iiange C containing the segmental recesses D coperating with the segmental loops F3 together with the segmental plugs H and the bolts I;l

and the tire G having the internal iianges and connected to said extensions f, substantially as shown and described.

JAMES MACPIIAIL. \Vitnesses:

A. A. MURRAY, FLORA BRoM. 

